CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM

stressComponents utility in LES calculations

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   February 25, 2010, 13:25
Default stressComponents utility in LES calculations
  #1
Senior Member
 
Vesselin Krastev
Join Date: Jan 2010
Location: University of Tor Vergata, Rome
Posts: 368
Rep Power: 20
vkrastev is on a distinguished road
Hi everybody,
I'm working on a 2d LES simulation on a channel flow. The model I use is the oneEqEddy, with the same settings of the pitzDaily LES pisoFoam tutorial. So, the matter I wish to investigate is about the meaning of the stressComponents utility output in a case such this: are these components referred to the Smagorinski stress tensor (TAUsgs)? If they not, what actually do they represent in a LES simulation?

Thank you in advance
vkrastev is offline   Reply With Quote

Old   February 25, 2010, 13:44
Default
  #2
Senior Member
 
Vesselin Krastev
Join Date: Jan 2010
Location: University of Tor Vergata, Rome
Posts: 368
Rep Power: 20
vkrastev is on a distinguished road
Any replies?
vkrastev is offline   Reply With Quote

Old   February 26, 2010, 05:19
Default
  #3
Senior Member
 
Vesselin Krastev
Join Date: Jan 2010
Location: University of Tor Vergata, Rome
Posts: 368
Rep Power: 20
vkrastev is on a distinguished road
??????????
vkrastev is offline   Reply With Quote

Old   April 12, 2011, 13:57
Default
  #4
Member
 
longamon's Avatar
 
David Aljure
Join Date: Mar 2011
Location: CTTC Universidad Politécnica de Catalunya. Spain
Posts: 38
Rep Power: 15
longamon is on a distinguished road
In its source code, stressComponents is defined as:

laminarTransport.nu()*2*dev(symm(fvc::grad(U)))

I think it's not related to sgs stresses, its the deviatoric stress components.
(1 year late :^P)
longamon is offline   Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
LES of turbulent channel flows cedric_duprat OpenFOAM Running, Solving & CFD 220 November 18, 2019 05:19
LES and combustion model Margherita Cadorin CFX 0 October 29, 2008 06:24
Les and acoustic calculations in CFX Sebastian CFX 3 June 18, 2008 07:34
LES on two phase flow Li Yang Main CFD Forum 0 May 12, 2004 09:10
Some Questions about LES. Bin Li Main CFD Forum 2 February 20, 2004 10:58


All times are GMT -4. The time now is 08:27.